13531435553 has 2 divisors, whose sum is σ = 13531435554. Its totient is φ = 13531435552.

The previous prime is 13531435543. The next prime is 13531435559. The reversal of 13531435553 is 35553413531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13250772544 + 280663009 = 115112^2 + 16753^2 .

It is an emirp because it is prime and its reverse (35553413531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13531435553 - 2⁴ = 13531435537 is a prime.

It is not a weakly prime, because it can be changed into another prime (13531435559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765717776 + 6765717777.

It is an arithmetic number, because the mean of its divisors is an integer number (6765717777).

Almost surely, 2^13531435553 is an apocalyptic number.

It is an amenable number.

13531435553 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531435553 is an equidigital number, since it uses as much as digits as its factorization.

13531435553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 202500, while the sum is 38.

The spelling of 13531435553 in words is "thirteen billion, five hundred thirty-one million, four hundred thirty-five thousand, five hundred fifty-three".